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Oppo A3s vs Oppo A91

Compare recorded specifications, size and practical differences.

Oppo A3s

Oppo A3s

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Oppo A91

Oppo A91

Replace A91
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Key differences

Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.

  • Display technologyOLED versus LCDA3s: LCD · A91: OLED
  • WidthA91: 2.3 mm narrowerA91: 73.3 mm · A3s: 75.6 mm
  • Screen diagonalA3s: 0.2 in smaller diagonalA3s: 6.2 in · A91: 6.4 in
  • ChipsetQualcomm SDM450 Snapdragon 450 (14 nm) / Mediatek MT6771V Helio P70 (12nm)A3s: Qualcomm SDM450 Snapdragon 450 (14 nm) · A91: Mediatek MT6771V Helio P70 (12nm)
  • Rear camera layoutDual / QuadA3s: Dual · A91: Quad
  • HeightA3s: 4 mm shorterA3s: 156.2 mm · A91: 160.2 mm

Physical size

Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.

Front
A3s: 156.2 × 75.6 mm 1 A91: 160.2 × 73.3 mm 2
Side
A3s: 156.2 × 8.2 mm 1 A91: 160.2 × 7.9 mm 2
  1. 1. A3s
    Height
    156.2 mm
    Width
    75.6 mm+2.3 mm versus A91
    Depth
    8.2 mm
    Weight
    168 g
  2. 2. A91
    Height
    160.2 mm+4 mm versus A3s
    Width
    73.3 mm
    Depth
    7.9 mm
    Weight
    172 g
Weight

Bars start at zero and share a scale within this chart.

  1. 1. A3s168 g
  2. 2. A91172 g

    +4 g versus A3s

Screen size

Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.

Screen size
A3s: 6.2 in, 19:9, About 95.9 cm² rectangular area 1 A91: 6.4 in, 20:9, About 98.9 cm² rectangular area 2
  1. 1. A3s 6.2 in · 19:9 About 95.9 cm² rectangular area
  2. 2. A91 6.4 in · 20:9 About 98.9 cm² rectangular area

A91 has approximately 3.1% more rectangular screen area than A3s.

Memory variants

Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.

Recorded RAM by storage capacity and phone
StorageA3sA91
16 GB 2 GB RAM Not recorded
128 GB Not recorded 8 GB RAM

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. A3s

NFC
Unknown
Headphone jack
Yes
Memory card support
See details microSD · up to 256 GB (dedicated slot)

2. A91

NFC
Unknown
Headphone jack
Yes
Memory card support
See details microSD · up to 256 GB (dedicated slot)

Battery capacity

Capacity is not battery life. No endurance test is implied.

Recorded capacity

Bars start at zero and share a scale within this chart.

  1. 1. A3s4230 mAh

    +205 mAh versus A91

  2. 2. A914025 mAh

Specifications

Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

1. A3s2. A91

Everyday essentials
Everyday essentials
SpecificationA3sA91
Dimensions (HxWxD)
  • 156.2 Х 75.6 Х 8.2 mm
  • 160.2 Х 73.3 Х 7.9 mm
Weight
  • 168 g
  • 172 g
Technology
  • IPS LCD
  • AMOLED
Screen size
  • 6.2" inch
  • 6.4" inch
Screen resolution
  • 720 x 1520 px
  • 1080 x 2400 px
Internal memoryRecorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 16 GB
  • 2 GB RAM
  • 128GB 8GB RAM
Memory card support
  • microSD
  • up to 256 GB (dedicated slot)
  • microSD
  • up to 256 GB (dedicated slot)
BatteryCapacity is not battery life. No endurance test is implied.
  • 4230 mAh
  • Non-removable Li-Ion
  • 4025 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 8.1 (Oreo); ColorOS 5.1
  • Android 9.0 (Pie); ColorOS 6.1
Chipset
  • Qualcomm SDM450 Snapdragon 450 (14 nm)
  • Mediatek MT6771V Helio P70 (12nm)
Headphone jack
  • Yes
  • Yes
Display
Display
SpecificationA3sA91
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 95.9 cm2
  • 100.4 cm2
Screen format
  • 19:9 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 81.2%
  • 85.5%
PPI /points per inch/
  • 271 PPI
  • 408 PPI
Screen protection Unknown
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video
SpecificationA3sA91
Rear camera, main
  • 13 MP
  • Dual
  • 48 MP
  • Quad
Camera specs
  • 13 MP
  • f/2.2
  • AF -2 MP
  • f/2.4
  • depth sensor
  • 48 MP
  • f/1.8
  • 26mm (wide)
  • 1/2.0"
  • 0.8µm
  • PDAF -8 MP
  • f/2.2
  • 13mm (ultrawide)
  • 1/4.0"
  • 1.12µm -2 MP B/W
  • f/2.4
  • 1/5.0"
  • 1.75µm -2 MP
  • 1.75µm
  • depth sensor
Functions
  • LED flash
  • HDR
  • panorama
  • HDR
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 16 MP
  • Single
Specifications
  • 8 MP
  • f/2.2
  • 16 MP
  • f/2.0
  • 26mm (wide)
  • 1/3.1''
  • 1.0µm
Performance
Performance
SpecificationA3sA91
Processor CPU
  • Octa-core 1.8 GHz Cortex-A53
  • Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
Graphics processor GPU
  • Adreno 506
  • Mali-G72 MP3
Antutu 7 scoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.
  • 64122
  • 135756
General specs
General specs
SpecificationA3sA91
Release date
  • 2018
  • July
  • 2019
  • December
Colors
  • Red
  • Dark Purple
  • Dark Blue
  • Red
  • Blue
Historical recorded priceLegacy catalogue value; date unknown. Not a current offer.
  • 11000 INR
  • 260 EUR
Body build Unknown
  • Glass front (Gorilla Glass 5)
  • plastic back
  • plastic frame
Communication and Connectivity
Communication and Connectivity
SpecificationA3sA91
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 2100 -4G - LTE
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 8(900)
  • 34(2000)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE-A (2CA) Cat6 300/50 Mbps
  • HSPA 42.2/11.5 Mbps
  • LTE-A
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • WiFi Direct
  • hotspot
  • Wi-Fi 802.11 a/b/g/n/ac/ax
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • USB On-The-Go
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
Bluetooth
  • 4.2
  • A2DP
  • LE
  • 4.2
  • A2DP
  • LE
Music and Audio
Music and Audio
SpecificationA3sA91
Radio
  • FM radio
  • FM radio
Others
  • Active noise cancellation with dedicated mic
  • 430 nits typ. brightness
  • Active noise cancellation with dedicated mic
Other features
Other features
SpecificationA3sA91
Dop
  • Sensors Accelerometer
  • proximity
  • compass - For India
  • Sensors Fingerprint (under display
  • optical)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast charging 20W
  • 50% in 30 min -VOOC 3.0